Comparative study on fretting wear damage mechanisms of 316L steel in dry air and liquid lead-bismuth eutectic environments
Due to flow induced vibration caused by coolant circulation, fretting wear inevitably occurs between fuel cladding, heat exchanger tubes and their holders in Gen IV lead-bismuth eutectic (LBE) cooled nuclear reactors. Focusing on this issue, in the current work, fretting wear behavior and damage mec...
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Elsevier
2025-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425019258 |
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| author | Qi Sun Yu Qin Haowen Tang Qian Yang Pengfei Yang Xiaoqiang Fan Minhao Zhu |
| author_facet | Qi Sun Yu Qin Haowen Tang Qian Yang Pengfei Yang Xiaoqiang Fan Minhao Zhu |
| author_sort | Qi Sun |
| collection | DOAJ |
| description | Due to flow induced vibration caused by coolant circulation, fretting wear inevitably occurs between fuel cladding, heat exchanger tubes and their holders in Gen IV lead-bismuth eutectic (LBE) cooled nuclear reactors. Focusing on this issue, in the current work, fretting wear behavior and damage mechanisms in air and LBE environments at 350 °C were comparatively investigated. The results reveal that both of the microstructures under fretting interfaces in these two environments are composed of third body layer (TBL) and plastic deformation layer (PDL). While, fretting wear damage in LBE environment is obviously more serious, due to the change of fretting wear mechanisms. In air environment, fretting damage is dominated by abrasive wear and oxidation wear. In contrast, delamination wear also plays a crucial role in LBE environment, which is related to the phase transformation from austenite to ferrite induced by the elective leaching of Ni. Accordingly, the possible reasons behind such a phenomenon were proposed and discussed. The results in this work are not only expected to better understand failure behavior of fretting wear in liquid LBE environment, but also provide a possible guide for selecting the optimal damage protection method. |
| format | Article |
| id | doaj-art-4f36ce973c8b41f8aff3c7e2cca510de |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-4f36ce973c8b41f8aff3c7e2cca510de2025-08-20T03:16:00ZengElsevierJournal of Materials Research and Technology2238-78542025-09-013871872710.1016/j.jmrt.2025.07.267Comparative study on fretting wear damage mechanisms of 316L steel in dry air and liquid lead-bismuth eutectic environmentsQi Sun0Yu Qin1Haowen Tang2Qian Yang3Pengfei Yang4Xiaoqiang Fan5Minhao Zhu6Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Material Science and Engineering, Southwest Jiaotong University, Chengdu, China; Corresponding author.Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Material Science and Engineering, Southwest Jiaotong University, Chengdu, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Material Science and Engineering, Southwest Jiaotong University, Chengdu, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Material Science and Engineering, Southwest Jiaotong University, Chengdu, ChinaCollege of Engineering, Zhejiang Normal University, Jinhua, Zhejiang, 321004, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Material Science and Engineering, Southwest Jiaotong University, Chengdu, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Material Science and Engineering, Southwest Jiaotong University, Chengdu, ChinaDue to flow induced vibration caused by coolant circulation, fretting wear inevitably occurs between fuel cladding, heat exchanger tubes and their holders in Gen IV lead-bismuth eutectic (LBE) cooled nuclear reactors. Focusing on this issue, in the current work, fretting wear behavior and damage mechanisms in air and LBE environments at 350 °C were comparatively investigated. The results reveal that both of the microstructures under fretting interfaces in these two environments are composed of third body layer (TBL) and plastic deformation layer (PDL). While, fretting wear damage in LBE environment is obviously more serious, due to the change of fretting wear mechanisms. In air environment, fretting damage is dominated by abrasive wear and oxidation wear. In contrast, delamination wear also plays a crucial role in LBE environment, which is related to the phase transformation from austenite to ferrite induced by the elective leaching of Ni. Accordingly, the possible reasons behind such a phenomenon were proposed and discussed. The results in this work are not only expected to better understand failure behavior of fretting wear in liquid LBE environment, but also provide a possible guide for selecting the optimal damage protection method.http://www.sciencedirect.com/science/article/pii/S2238785425019258Fretting wearDamage mechanismLead-bismuth eutectic316L steel |
| spellingShingle | Qi Sun Yu Qin Haowen Tang Qian Yang Pengfei Yang Xiaoqiang Fan Minhao Zhu Comparative study on fretting wear damage mechanisms of 316L steel in dry air and liquid lead-bismuth eutectic environments Journal of Materials Research and Technology Fretting wear Damage mechanism Lead-bismuth eutectic 316L steel |
| title | Comparative study on fretting wear damage mechanisms of 316L steel in dry air and liquid lead-bismuth eutectic environments |
| title_full | Comparative study on fretting wear damage mechanisms of 316L steel in dry air and liquid lead-bismuth eutectic environments |
| title_fullStr | Comparative study on fretting wear damage mechanisms of 316L steel in dry air and liquid lead-bismuth eutectic environments |
| title_full_unstemmed | Comparative study on fretting wear damage mechanisms of 316L steel in dry air and liquid lead-bismuth eutectic environments |
| title_short | Comparative study on fretting wear damage mechanisms of 316L steel in dry air and liquid lead-bismuth eutectic environments |
| title_sort | comparative study on fretting wear damage mechanisms of 316l steel in dry air and liquid lead bismuth eutectic environments |
| topic | Fretting wear Damage mechanism Lead-bismuth eutectic 316L steel |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425019258 |
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